Natural rubber/silica composite mas-terbatch with dispersed silica particle size of 100 nm was prepared by wet mixing process,and micron/nano co-filled natural rubber/silica composite with a total silica filling amount of 60 phr(mass)was prepared by traditional dry mixing process.The results showed that the silica with small particle size filled in the wet mixing process was still dispersed in its primitive size,and tended to form a tight bound rubber layer.The use of wet mixing process improved the disper-sion of silica,and weakened the Payne effect of the composites.When the ratio of small to large silica particles prepared in combination with dry mixing process was 50/10,the wider particle size distribu-tion of the filler was formed,and the silica-rubber binding strength was moderate,which further im-proved the tensile strength and elongation at break of natural rubber/silica composite.
维普
万方数据